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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (510)988-9600 FAX(5tO)988-9673 <br /> Analytical 819 Striker Avenue Sulte 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> Cambria Client Proj--ID Shell-i071 N Main Manteca Sampled 03/26/98 <br /> 1144 65th St Suite C Sample Descript MW-3, 33 5-34 5 Received 03/27/98 <br /> ' Oakland, CA 94608 Matrix SOLID Extracted 04/02/98 <br /> Analysis Method 8015Mod/8020 Analyzed 04/02/98 <br /> Attention Paul Waite Lab Number 9803.!61-04 = Reported 04109198 <br /> OC Batch Number GC040298BTEXEXA - <br /> Instrument 1D GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 85 <br /> 4-Bromofluorobenzene 60 140 101 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> rdHerling <br /> Pr ect Manager Page 10 <br />